我是一名老师，刚刚开始学习为我的学生编写在线测验的代码。我对JavaScript和php之类的编程还是很陌生，并且我尝试过在线寻找源代码以帮助创建测验。我有两个问题:
1)。我已经为测验设置了一个计时器，但是每次时间到了，它就一直在计数，我应该在计时器中输入什么
if (parseInt(min) == 0) {
clearTimeout(tim);
location.href = "";
部分将我的学生重定向到结果页面或其他页面？
(2)我的测验大多是填空题，我想知道如何存储每个问题的分数，然后在测验结束时向学生显示总成绩？非常感谢!。
这是我的代码:
<html>
<head>
<script language ="javascript" >
var tim;
var min = 0;
var sec = 30;
var f = new Date();
function f1() {
f2();
document.getElementById("starttime").innerHTML = "Your started your quiz at " + f.getHours() + ":" + f.getMinutes();
}
function f2() {
if (parseInt(sec) > 0) {
sec = parseInt(sec) - 1;
document.getElementById("showtime").innerHTML = "Your Left Time is :"+min+" Minutes ," + sec+" Seconds";
tim = setTimeout("f2()", 1000);
}
else {
if (parseInt(sec) == 0) {
min = parseInt(min) - 1;
if (parseInt(min) == 0) {
clearTimeout(tim);
location.href = "www.rawlanguages.com";
}
else {
sec = 60;
document.getElementById("showtime").innerHTML = "Your Left Time is :" + min + " Minutes ," + sec + " Seconds";
tim = setTimeout("f2()", 1000);
}
}
}
}
</script>
<title>Quiz</title>
<h1>P.1 Grammar Quiz</h1>
<body>
<div id="ques0" class="ques">
<h2>Question</h2>
<p>She
<input type="text" name="answer0"/> a girl.</p>
</div>
<div id="ques1" class="ques">
<h2>Question</h2>
<p>"is", "am" and "are" are</p>
<ul>
<li>
<input type="radio" name="answer1" value="Present tense" />
<label>Present tense</label>
</li>
<li>
<input type="radio" name="answer1" value="Past tense" />
<label>Past tense</label>
</li>
<li>
<input type="radio" name="answer1" value="Future tense" />
<label>Future tense</label>
</li>
</ul>
</div>
<div id="ques2" class="ques">
<h2>Question</h2>
<p>He
<input type="text" name="answer2"/> a policeman.
</p>
</div>
<a href="javascript:checkAnswer()">Check answer!</a>
<script src="JQ.js"></script>
<script src="function.js"></script>
<body onload="f1()" >
<form id="form1" runat="server">
<div>
<table width="100%" align="center">
<tr>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<div id="starttime"></div>
<div id="endtime"></div>
<div id="showtime"></div>
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</div>
</form>
</body>
</head>
</html>
最佳答案
您的代码对于初学者来说已经足够好了，但是需要一些改进。
<script type="text/javascript" >//language ="javascript" is obsolete
//var tim; //no need at all
//var min = 0; //no need at all
//var sec = 30; //there is better way
//var f = new Date(); //no need to be global
function f1(sec) {//define (declare) sec as parameter
f2(); //call the function
var f = new Date();
document.getElementById("starttime").innerHTML = "Your started your quiz at " + f.getHours() + ":" + f.getMinutes();
var showtime = document.getElementById("showtime"); //used many times
//Here we put (closure) f2
function f2() {
//f2 knows sec from parent scope
if (sec <= 0) {//parseInt(sec) no need. sec is int
showtime.innerHTML = 'Time is over';
//ShowAnswers(); //show on the same page or post to .php
return;
}
sec--;// = parseInt(sec) - 1;
showtime.innerHTML = "Your Left Time is :" + Math.floor(sec / 60) +" Minutes ," + (sec % 60) +" Seconds";
setTimeout(f2, 1000);//"f2()" is correct but this way is better
/* no need in remaining code
}
else {
if (parseInt(sec) == 0) {
min = parseInt(min) - 1;
if (parseInt(min) == 0) {
clearTimeout(tim);
location.href = "www.rawlanguages.com";
}
else {
sec = 60;
document.getElementById("showtime").innerHTML = "Your Left Time is :" + min + " Minutes ," + sec + " Seconds";
tim = setTimeout("f2()", 1000);
}
}
}
*/
}//f2
}//f1
</script>
<body onload="f1(90)"><!--Here we send seconds to the function -->
另请注意，您从
<h1>P.1...开始的所有测验都必须在body容器内。关于javascript - 显示和计算javascript测验的分数，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38488114/